Added signal_generator.rs example

examples/signal_generator.rs

@@ -0,0 +1,83 @@
+//! Noise generator example. Use the "noise" feature to enable the noise generator sources.
+
+fn main() {
+    use rodio::source::{chirp, Function, Source, TestWaveform};
+    use std::thread;
+    use std::time::Duration;
+
+    let (_stream, stream_handle) = rodio::OutputStream::try_default().unwrap();
+
+    let noise_duration = Duration::from_millis(1000);
+    let interval_duration = Duration::from_millis(1500);
+
+    println!("Playing 1000 Hz tone");
+    stream_handle
+        .play_raw(
+            TestWaveform::new(cpal::SampleRate(48000), 1000.0, Function::Sine)
+                .amplify(0.1)
+                .take_duration(noise_duration),
+        )
+        .unwrap();
+
+    thread::sleep(interval_duration);
+
+    println!("Playing 10,000 Hz tone");
+    stream_handle
+        .play_raw(
+            TestWaveform::new(cpal::SampleRate(48000), 10000.0, Function::Sine)
+                .amplify(0.1)
+                .take_duration(noise_duration),
+        )
+        .unwrap();
+
+    thread::sleep(interval_duration);
+
+    println!("Playing 440 Hz Triangle Wave");
+    stream_handle
+        .play_raw(
+            TestWaveform::new(cpal::SampleRate(48000), 440.0, Function::Triangle)
+                .amplify(0.1)
+                .take_duration(noise_duration),
+        )
+        .unwrap();
+
+    thread::sleep(interval_duration);
+
+    println!("Playing 440 Hz Sawtooth Wave");
+    stream_handle
+        .play_raw(
+            TestWaveform::new(cpal::SampleRate(48000), 440.0, Function::Sawtooth)
+                .amplify(0.1)
+                .take_duration(noise_duration),
+        )
+        .unwrap();
+
+    thread::sleep(interval_duration);
+
+    println!("Playing 440 Hz Square Wave");
+    stream_handle
+        .play_raw(
+            TestWaveform::new(cpal::SampleRate(48000), 440.0, Function::Square)
+                .amplify(0.1)
+                .take_duration(noise_duration),
+        )
+        .unwrap();
+
+    thread::sleep(interval_duration);
+
+    println!("Playing 20-10000 Hz Sweep");
+    stream_handle
+        .play_raw(
+            chirp(
+                cpal::SampleRate(48000),
+                20.0,
+                10000.0,
+                Duration::from_secs(1),
+            )
+            .amplify(0.1)
+            .take_duration(noise_duration),
+        )
+        .unwrap();
+
+    thread::sleep(interval_duration);
+}